Key and lock mechanism

Details Key and lock mechanism Key and lock mechanism

E - Fixed Constructions

05

B

70/50, 70/57, 70

E05B 35/00 (2006.01) E05B 19/00 (2006.01) E05B 37/00 (2006.01)

Patent

CA 1271045

KEY AND LOCK MECHANISM ABSTRACT A key/combination lock having a series of first turnable members each being constructed to be moved by turning movement of a key. There is a series of second turnable members operatively related on a one-to-one basis with the first turnable members. Said second turnable members are constructed to be turned by finger contact. There is a mechanism for each pair of turnable members whereby movement of the second turnable member is imparted to the first turnable member. Each of the first turnable members has a peripheral notch, the notches being brought into alignment with one another and into register with a lock releasing mechanism upon the two stages of movement effected by the key and the finger contact. A cylindrical key is provided for actuating the lock and has a longitudinal keyway from which circumferential grooves extend, terminating in stop faces displaced coded circumferential distances from said keyway. The stop faces are adapted to engage internal lugs on the first turnable members. The cylindrical member can be made of plural segments in which a stop face terminates at an end face of a segment. The lock is preferably arranged so that a record of the identity of the user is made after the first stage of turning movement but prior to the second stage. The lock also preferably has a case containing a key holder which cannot be released until the code wheels are in predetermined positions. The key preferably has stop faces for turning and then axially shifting a sequencing wheel. The key also preferably has a cam face to axially move the sequencing wheel. The key also preferably has a wide circumferential groove for receiving a wide lug on the case to insure full insertion of the key prior to actuation of the internal components.

485020

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